EP 1025339 A1 20000809 - AUTOMATIC CONTROL SYSTEM FOR A CONCRETE DISTRIBUTING PIPE IN TUNNEL LINING
Title (en)
AUTOMATIC CONTROL SYSTEM FOR A CONCRETE DISTRIBUTING PIPE IN TUNNEL LINING
Title (de)
AUTOMATISCHES STEUERUNGSSYSTEM FÜR BETONVERTEILERRÖHREN IN TUNNELAUSKLEIDUNG
Title (fr)
SYSTEME DE COMMANDE AUTOMATIQUE POUR CONDUIT DE DISTRIBUTION DE BETON POUR REVETEMENT DE TUNNEL
Publication
Application
Priority
- EP 9806517 W 19981014
- IT MI972328 A 19971015
Abstract (en)
[origin: WO9919604A1] System for performing automatic movement of the end pipe of the arm supplying fluid concrete mixes and air (shotcrete) in machines for lining tunnel vaults and the like, in which electrohydraulic actuators for the movements of the pipe are controlled by sending to them electrical commands in the form of square-wave signals with a variable frequency and in appropriate sequences, a signal being provided for each type of desired movement.
IPC 1-7
IPC 8 full level
E21D 11/10 (2006.01); F15B 11/00 (2006.01); G05B 11/30 (2006.01)
CPC (source: EP)
E21D 11/105 (2013.01); G05B 11/30 (2013.01)
Citation (search report)
See references of WO 9919604A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 9919604 A1 19990422; AR 017343 A1 20010905; AU 1153999 A 19990503; CA 2306956 A1 19990422; CN 1276036 A 20001206; CO 4870743 A1 19991227; DE 69817004 D1 20030911; DE 69817004 T2 20040708; EP 1025339 A1 20000809; EP 1025339 B1 20030806; ES 2205567 T3 20040501; IT 1295334 B1 19990504; IT MI972328 A1 19990415; JP 2001520341 A 20011030; TR 200000970 T2 20000821; ZA 989286 B 19990413
DOCDB simple family (application)
EP 9806517 W 19981014; AR P980105136 A 19981015; AU 1153999 A 19981014; CA 2306956 A 19981014; CN 98810164 A 19981014; CO 98060109 A 19981015; DE 69817004 T 19981014; EP 98954415 A 19981014; ES 98954415 T 19981014; IT MI972328 A 19971015; JP 2000516138 A 19981014; TR 200000970 T 19981014; ZA 989286 A 19981012